<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16"><path d="M7 3v5H3v2h10V3z" opacity=".3" fill="#555555"/><path d="M6 3L3 7h3z" fill="#555555"/><path d="M2 0C0 0 0 2 0 2v9s0 2 2 2h12s2 0 2-2V2s0-2-2-2zm0 2h12v9H2zm1 13v1h10v-1c0-1-1-1-1-1H4s-1 0-1 1z" fill="#555555"/></svg>